1/5(x-8)x-16

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Solution for 1/5(x-8)x-16 equation: 


x in (-oo:+oo)

(1/5)*x*(x-8)-16 = 0

1/5*x*(x-8)-16 = 0

1/5*x*(x-8)-16 = 0

1/5*x^2-8/5*x-16 = 0

1/5*x^2-8/5*x-16 = 0

1/5*x^2-8/5*x-16 = 0

DELTA = (-8/5)^2-(-16*1/5*4)

DELTA = 384/25

DELTA > 0

x = ((384/25)^(1/2)+8/5)/(1/5*2) or x = (8/5-(384/25)^(1/2))/(1/5*2)

x = 5/2*((384/25)^(1/2)+8/5) or x = 5/2*(8/5-(384/25)^(1/2))

(x-5/2*(8/5-(384/25)^(1/2)))*(x-5/2*((384/25)^(1/2)+8/5)) = 0

(x-5/2*(8/5-(384/25)^(1/2)))*(x-5/2*((384/25)^(1/2)+8/5)) = 0

( x-5/2*((384/25)^(1/2)+8/5) )

x-5/2*((384/25)^(1/2)+8/5) = 0 // + -5/2*((384/25)^(1/2)+8/5)

x = -(-5/2*((384/25)^(1/2)+8/5))

x = 5/2*((384/25)^(1/2)+8/5)

( x-5/2*(8/5-(384/25)^(1/2)) )

x-5/2*(8/5-(384/25)^(1/2)) = 0 // + -5/2*(8/5-(384/25)^(1/2))

x = -(-5/2*(8/5-(384/25)^(1/2)))

x = 5/2*(8/5-(384/25)^(1/2))

x in { 5/2*((384/25)^(1/2)+8/5), 5/2*(8/5-(384/25)^(1/2)) }

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